How could they get a search warrant for an entire 4-apartment complex? Isn't much more specificity required? Was this supposed to be some kind of a ring with all four apartments involved? This sounds pretty "general" to me. And besides, they got the wrong place!
The cops were looking for two handguns, a pile of marijuana and evidence of a pot-selling operation. They found nothing.
Lemme get this straight. They smashed down the door and took the chance of killing somebody looking for this penny-ante stuff? What, no hostages or rapes in progress, just a few terrified "civilians"?
Whatever happened to the police politely knocking on the door, showing the warrant and doing a search without terrorizing everybody in sight? Did they think a large stash of marajuana and two guns were going to be flushed down the toilet by the time they got from the front door to the bathroom?
They don't need to be sued. They need to go to jail instead!
Simple. Several of them got blown away by drug dealers who, having heard the knock and the words, "Police! We have a warrant!" promptly picked up their favorite pieces, put themselves in a good position, and shot the cops either through the door or as they were coming in.
Look, I agree that it sucks that these cops terrorized this family, and I think whoever screwed up the operation needs to be busted for it (I also think they have a right to know who fingered them for drug dealers), but try thinking it through before you assume that the cops come on fully armed and with overwhelming force just for the power rush. They do it so that the other guy doesn't have the chance to even think about firing back, making it safer for all concerned, both them and the suspects.